| 相变贮热系统的热力学分析 |
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| 引用本文： | 童幸林. 相变贮热系统的热力学分析[J]. 武汉大学学报(工学版), 1992, 0(3) |
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| 作者姓名： | 童幸林 |
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| 作者单位： | 武汉水利电力学院热能动力工程系 |
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| 摘 要： | 本文基于热力学第二定律,对相变贮热系统进行了分析,得到了两个热力学优化参数,即最佳贮热介质温度和最佳传热单元数;同时运用了压朋损失和焓朋损失这两个不同的概念,讨论了由此而对最佳传热单元数(即换热器尺寸大小)的影响;还比较了显热贮存系统和相变贮热系统之间贮热性能的差别。
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| 关 键 词： | 热能 熵 传热 不可逆性/(火用) |
Thermodynamic Analysis of Latent Heat Storage-Systems |
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| Tong Xinglin. Thermodynamic Analysis of Latent Heat Storage-Systems[J]. Engineering Journal of Wuhan University, 1992, 0(3) |
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| Authors: | Tong Xinglin |
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| Affiliation: | Tong Xinglin |
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| Abstract: | Based on the second law of thermodynamics, an analysis of latent heat storage systems is given and two thermodynamic optima for this kind of systems are obtained (i. e. the optimal temperature of heat storage medium and the optimal unit number of heat transfer). Meanwhile two different conceptions——thermal exergy and potential exergy——are put to use and the influence caused thereby on the optimal unit number of heat transfer is discussed. Finally the performance difference between latent heat and sensible heat storage systems is also pointed out. |
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| Keywords: | thermal energy entropy heat transfer irreversibility / exergy |
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